Verifiable receipt 2668c7c6 — prompt_shield result | Zambo

Verifiable receipt for a prompt_shield call on Zambo: {"recommendation":"safe","injection_risk":0,"risk_level":"low","jailbreak_detected":false,"policy_bypass_d

What is this?

An AI agent did real work through Zambo, and this page is the proof. The SHA-256 hash below is a fingerprint of exactly what the agent produced — change one character of the output and the fingerprint changes. The timestamp shows when it ran. The Nostr anchor posts that fingerprint to public relays, so the record exists outside Zambo too — anyone can look it up by the event ID below. You don't have to take the agent's word for it. Check the hash yourself.

What is an execution receipt?

An execution receipt is the public record of one completed AI agent tool call. Read the canonical definition of an AI agent execution receipt.

Observed result

{"recommendation":"safe","injection_risk":0,"risk_level":"low","jailbreak_detected":false,"policy_bypass_detected":false,"prompt_leak_detected":false,"pii_extraction_attempt":false,"flagged_patterns":[],"pattern_count":0,"analysis":{"intent":"benign","attack_vector":null,"reasoning":"No injection patterns detected","safe_version":null},"scan_mode":"pattern","latency_ms":2,"pass_used":false,"usage":{"plan":"free","calls_remaining":"49","daily_limit":50,"upgrade":"https://zambo.dev/#zambo-pass"},"_meta":{"tool":"PromptShield by zambo.dev","description":"Prompt injection & jailbreak detection API","pattern_library_size":18,"docs":"https://zambo.dev/api/prompt-shield"}}

Keep the work moving

This receipt proves the call completed. When the free allowance is not enough, choose the access path that fits the job.

UNLOCK 24H DAY PASS ($1.49) → ZAMBO PASS $49 →

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Or re-run this exact call — same tool, same arguments.

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Verification checks

Integrity check: Recomputable from canonical bytes
Issued by zambo.dev: Served from the zambo.dev receipt store
Chain valid: Receipt hash chain is internally consistent
Recorded in the immutable log: 2026-09-21T16:43:31.623Z

Proof of observed execution

Receipt ID: 2668c7c6-90ba-4e00-884d-8cdfb95bbf52
SHA-256 output hash: sha256:fee7fd34bf68c541550a139ca8d2766e2a8f345467ca346f0e66a5cfd8f1c847
Canonical bytes: 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
Timestamp: 2026-09-21T16:43:31.623Z

Bound call context

Receipt schema: 0.3
Tool name: prompt_shield
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:b10314606138a80fc7f81d7e1edbaf565f2991db788195c9411dd2aa6c50a0f2
Declared side effects: none
Side-effects schema: zambo-side-effects/1
Declaration hash: sha256:45aad38f3aa982b9aafe92ecb416ebe98791eddbaf8ab6df0bd08605b7c1bfee

This records what the server-side tool contract declared at call time. It does not independently verify that a downstream side effect happened.

Bound upstream evidence

Status: captured
Evidence SHA-256: sha256:1695c401e18c9321b7a5c17c2239f90d3e3bca40ade909d34811a714e24a25ff
Byte length: 674

Fetch exact evidence bytes

Neutral Nostr anchor

Event ID: 22c95ab5c85536d6e1c8a6adf053a54c1004ca89756b4314a8700a2308df4afc
Anchor status: published
Public key: e13475107d30c918ec664adf2ab1141024a22fb35190f82c9e933704fa49af41

Relay hints: wss://relay.damus.io · wss://nos.lol · wss://relay.primal.net

Schema: zambo-receipt-anchor/1

Anchor envelope bytes:

{"anchored_at":"2026-09-21T16:43:31.594Z","evidence_byte_length":674,"evidence_sha256":"sha256:1695c401e18c9321b7a5c17c2239f90d3e3bca40ade909d34811a714e24a25ff","evidence_url":"https://zambo.dev/api/evidence/1695c401e18c9321b7a5c17c2239f90d3e3bca40ade909d34811a714e24a25ff","output_sha256":"sha256:fee7fd34bf68c541550a139ca8d2766e2a8f345467ca346f0e66a5cfd8f1c847","receipt_uuid":"2668c7c6-90ba-4e00-884d-8cdfb95bbf52","schema_version":"zambo-receipt-anchor/1"}

Anchor status "published": Published to all configured relay targets.

Check this hash yourself

Open the verification endpoint — the server recomputes the SHA-256 from the stored bytes and answers verified:true. If it doesn't say verified, don't trust this page. See the Nostr anchor event on a public viewer — the fingerprint is timestamped outside Zambo too.

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